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  <title>获取 timezonedb 版本</title>
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  <div id="layout-content"><div id="function.timezone-version-get" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">timezone_version_get</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">timezone_version_get</span> &mdash; <span class="dc-title">
   获取 timezonedb 版本
  </span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.timezone-version-get-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description"><span class="methodname"><strong>timezone_version_get</strong></span>(): <span class="type">string</span></div>

  <p class="para rdfs-comment">
   返回当前 timezonedb 版本。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.timezone-version-get-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.timezone-version-get-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回格式为 <code class="literal">YYYY.increment</code> 的 <span class="type">string</span>，比如 <code class="literal">2022.2</code>。
  </p>
  <p class="para">
   如果时区数据库版本比较旧（比如不显示今年），然后可以通过升级 PHP 版本或者安装 <a href="https://pecl.php.net/package/timezonedb" class="link external">&raquo;&nbsp;timezonedb</a> PECL 包来更新时区信息。
  </p>
  <p class="para">
   一些系统发行版对 PHP 的日期/时间支持打了补丁，以便使用另一个来源的时区信息。在这种情况下，此函数将会返回
   <code class="literal">0.system</code>。在这种情况下也建议安装 <a href="https://pecl.php.net/package/timezonedb" class="link external">&raquo;&nbsp;timezonedb</a> 包。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.timezone-version-get-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2115">
    <p><strong>示例 #1 获取 timezonedb 版本</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">timezone_version_get</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
2022.2
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.timezone-version-get-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><a href="timezones.html" class="link">时区支持列表</a></li>
   </ul>
  </p>
 </div>

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